BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 479 45.4%
2 United States 261 24.7%
3 Netherlands 133 12.6%
4 Germany 60 5.7%
5 Russia 44 4.2%
6 Canada 28 2.7%
7 Korea, Republic of 21 2%
8 France 7 0.7%
9 Hong Kong 5 0.5%
10 Singapore 5 0.5%
11 India 3 0.3%
12 Thailand 2 0.2%
13 Norway 2 0.2%
14 United Kingdom 2 0.2%
15 Ukraine 1 0.1%
16 United Arab Emirates 1 0.1%
17 Japan 1 0.1%